DC 10000

The DC 10000 consists of four cascaded special dilution systems with the dilution factor 1:10. The DC 10000 dilution cascade has one aerosol inlet and four aerosol outlets. Depending on which aerosol outlet is connected to the measuring device, the aerosol with the dilution factors 1:10, 1:100, 1:1,000 or 1:10,000 are diluted and measured.

The DC 10000 can be operated with all common optical particle counters (OPC) according to ISO 12501-4 or optical aerosol spectrometers (OAS) according to ISO 12501-1. The DC 10000 can be used up to a particle size of approx. 5 µm.

Fig. 1: Overview of the DC 10000, front view

Functional principle

Fig. 2: Functional principle

Particle-free air with the volume flow V_R circulates through an annular passage around the suction nozzle. Thus, according to Bernoulli, a volume flow V_An is generated in the suction nozzle.

The dilution factor V_F is calculated according to the formula:

Fig. 3: Formula for the dilution factor V_F.

The DC 10000 needs no compressed air connection. So only an electrical power supply is necessary for operation.

Table 1:  Technical characteristics of Palas^® dilution systems

• Aerosol dilutions in filter media test systems, e.g. MFP 1000 HEPA and MFP Nano plus according to EN 1822 and ISO 29463
• Aerosol dilutions in filter test systems, e.g. according to EN 779, ASHRAE 52.2 and ISO 16890
• Aerosol dilution in clean rooms
• Aerosol dilution in the operating room to determine the level of protection according to SWKI VA 105-1 and DIN 1946-4
• Recovery tests according to ISO 14644-3